The main variation between systems is in the type of solar panel they use to collect the sun's energy. There are 2 main types of solar panel: Flat Plate and Evacuated Tubes.
- Flat plate panels - these look exactly like their name suggests: a flat, black plate, usually made of copper. These have an efficiency of around 30% and are cheaper to install. They normally require slightly more roof space than evacuated tubes to produce the same amount of hot water.
- Evacuated tube panels - these contain 10 to 30 tubes. They occupy a smaller roof area, about two thirds the size of a flat plate panel. They have an efficiency of around 40%, are generally a bit more expensive. They have a higher profile on the roof, but because of their design they maintain a more even heat output over the day.
In the UK where we encounter freezing temperatures, a ‘closed loop' system is generally used. With this system intermediary fluid and a heat exchange system heat the water in your hot water tank indirectly.
Some systems use a pump to move fluid through the systems, while others use gravity. Pump based systems are usually easier to fit. Some systems power this pump using a small solar electric panel so that the system operates with absolutely no carbon emissions.
If you are interested in installing one of the above systems in your home you can request a quotation from our installation partner, by following this link to our enquiry form.
